Sergio Marchionne has said that the 2016 title is still within Ferrari's reach.
The Maranello team has come out this year with a competitive car, but race incidents and also problems with the engine mean that Mercedes are still clearly ahead.
"Absolutely," the Ferrari and Fiat president told Bild newspaper. "Of course I still believe in the title."
"We had two problems with the [power] unit," Marchionne is quoted as saying by Italy's La Repubblica. "[They were] fixed.
"We have to admit that these engines are complex and reliability is a problem that concerns everyone, including Mercedes, as we have seen. It is a sign that they are under pressure too."
The season continues with the Russian Grand Prix next weekend.
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